Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

38 results about "Calcifediol" patented technology

This medication is used to treat people with serious kidney disease whose bodies make too much of a certain natural substance (parathyroid hormone-PTH).

Preparation method of calcitriol

The invention relates to a preparation method of calcitriol which is a compound material, belonging to the technical field of preparation of drug synthesis and organic compound synthesis. In the invention, the calcifediol is taken as raw material, a majority of produced impurities in the chemical reaction process are removed through medium-pressure liquid phase chromatography, wherein calcifediol carried out sulfonylation and ring closing on toluene, and the medium-pressure liquid phase chromatography is used for removing the impurities; products carry out oxidation reaction, medium-pressure chromatographic column separates and removes the impurities, ring opening is carried out, medium-pressure liquid phase is added for coarsely separating stereoisomeride, and at last the products separated by high-pressure liquid phase chromatography is hydrolyzed and refined to obtain the calcitriol. The invention is reasonably selected, comprehensively applies the advantages of the medium and high pressure liquid phase chromatography, has simple detaching method, can effectively remove the impurities, thoroughly separates the stereoisomeride, has high purity of the calcitriol obtained from separation, has a productive rate of 40 percent, high yield and low cost, shortens production period, is suitable for industrial scale, has application prospect, and provides a time-saving, economic and efficient method for the separation and the preparation of chiral compounds.
Owner:CP PHARMA QINGDAO CO LTD

A novel calcifediol (25-hydroxyvitamin D3) separation and purification method

A novel calcifediol (25-hydroxyvitamin D3) separation and purification method is provided. The method mainly includes subjecting calcifediol to extraction and separation with an organic solvent; concentrating an extract liquid; dissolving the concentrate again to obtain a calcifediol stock solution for column chromatography; preliminarily purifying the calcifediol product by utilizing a gel chromatographic column; then further purifying and separating the calcifediol product by utilizing macroporous adsorption resin; finally preparing a high-purity calcifediol product through column chromatography on silica gel; subjecting an eluate to concentration and crystallization to obtain a calcifediol crystal product. The method is advantageous in that 1) the calcifediol product obtained by separation and purification through the method is high in purity and high in yield; 2) gel column chromatography and macroporous resin adsorption chromatography are applied for separation and purification ofthe calcifediol product for the first time; 3) the method is simple in process and convenient to operate, a plurality of times of cyclic operation can be performed, the equipment cost is low and themethod is particularly suitable for industrial promotion; 4) organic solvents adopted in the method can be recycled and reused, so that the production cost is reduced, and the method is economical andenvironmentally friendly.
Owner:山东惠仕莱生物科技有限公司

Buffer composition for catalyzing the preparation of calcitriol or calcifediol and method for preparing calcitriol or calcifediol using same

The present invention relates to a buffer composition for promoting production of calcitriol or calcifediol, and a method for producing calcitriol or calcifediol using the same. More particularly, the present invention relates to a buffer composition for promoting production of calcitriol or calcifediol comprising a metallic compound, an organic solvent, cyclodextrin, tris(hydroxymethyl)aminomethane, sodium succinate, sodium chloride, magnesium chloride, and water, and a method for producing calcitriol or calcifediol using the same. In the method for producing calcitiriol or calcifediol, the production yield of calcitriol or calcifediol is high, and the bioconversion is carried out in an enzyme reaction system instead of in a microorganism culture system. Thus, it is not required to maintain a sterile state. Also, the separation / purification following the completion of a biocatalytic reaction can be carried out in a cleaner state than the microorganism culture method. Accordingly, there is an advantage in that a cost required for separation is low and the quality is improved. Furthermore, the buffer composition for promoting production of calcitriol or calcifediol can provide a high productivity of calcitriol or calcifediol.
Owner:IL DONG PHARMA CO LTD

Fusion protein or variant thereof and application of fusion protein or variant thereof in preparation of calcifediol

The invention provides a fusion protein or a variant thereof, the fusion protein comprises K1 and RhFR, the amino acid sequence of the K1 is as shown in SEQ ID NO: 1, and the amino acid sequence of the RhFR is as shown in amino acids from the 466th site to the 773rd site of SEQ ID NO:5. The invention also provides a preparation method and application of the fusion protein or the variant thereof. When the fusion protein or the variant of the fusion protein is applied to catalysis of VD3 to synthesize 25-hydroxyvitamin D3 (calcifediol), no extra electron transfer related protein needs to be added, the operation is simple and convenient, the electron transfer efficiency in the fusion protein is high, the catalytic efficiency is high, the yield of the obtained calcifediol is remarkably improved, the production cost is reduced, and the fusion protein or the variant of the fusion protein is suitable for industrial production.
Owner:ABIOCHEM BIOTECH CO LTD

Vitamin D supplementing preparation and application thereof

The invention belongs to the technical field of biological medicine, and particularly relates to a vitamin D supplementing preparation and application thereof. The vitamin D supplementing preparationcomprises the following active ingredients: calcifediol and oleanolic acid. The calcitriol and the oleanolic acid have a synergistic effect, so that bone marrow stem cells and osteoblasts can be effectively promoted to express CYP27B1, the synthesis of 1,25-dihydroxy vitamin D3 is improved, vitamin D3 required by human bodies, particularly special crowds, can be quickly supplemented, calcium and phosphorus metabolism can be regulated, bone mineral deposition can be promoted, and the vitamin D supplementing preparation can be applied to preparation of medicines for preventing or treating bone diseases caused by vitamin D deficiency.
Owner:THE HONG KONG POLYTECHNIC UNIV SHENZHEN RES INST

A novel separation and purification method of calcifediol (25-hydroxyvitamin d3)

A novel calcifediol (25-hydroxyvitamin D3) separation and purification method is provided. The method mainly includes subjecting calcifediol to extraction and separation with an organic solvent; concentrating an extract liquid; dissolving the concentrate again to obtain a calcifediol stock solution for column chromatography; preliminarily purifying the calcifediol product by utilizing a gel chromatographic column; then further purifying and separating the calcifediol product by utilizing macroporous adsorption resin; finally preparing a high-purity calcifediol product through column chromatography on silica gel; subjecting an eluate to concentration and crystallization to obtain a calcifediol crystal product. The method is advantageous in that 1) the calcifediol product obtained by separation and purification through the method is high in purity and high in yield; 2) gel column chromatography and macroporous resin adsorption chromatography are applied for separation and purification ofthe calcifediol product for the first time; 3) the method is simple in process and convenient to operate, a plurality of times of cyclic operation can be performed, the equipment cost is low and themethod is particularly suitable for industrial promotion; 4) organic solvents adopted in the method can be recycled and reused, so that the production cost is reduced, and the method is economical andenvironmentally friendly.
Owner:山东惠仕莱生物科技有限公司

Preparation method of calcitriol

The invention relates to a preparation method of calcitriol which is a compound material, belonging to the technical field of preparation of drug synthesis and organic compound synthesis. In the invention, the calcifediol is taken as raw material, a majority of produced impurities in the chemical reaction process are removed through medium-pressure liquid phase chromatography, wherein calcifediolcarried out sulfonylation and ring closing on toluene, and the medium-pressure liquid phase chromatography is used for removing the impurities; products carry out oxidation reaction, medium-pressure chromatographic column separates and removes the impurities, ring opening is carried out, medium-pressure liquid phase is added for coarsely separating stereoisomeride, and at last the products separated by high-pressure liquid phase chromatography is hydrolyzed and refined to obtain the calcitriol. The invention is reasonably selected, comprehensively applies the advantages of the medium and highpressure liquid phase chromatography, has simple detaching method, can effectively remove the impurities, thoroughly separates the stereoisomeride, has high purity of the calcitriol obtained from separation, has a productive rate of 40 percent, high yield and low cost, shortens production period, is suitable for industrial scale, has application prospect, and provides a time-saving, economic and efficient method for the separation and the preparation of chiral compounds.
Owner:CP PHARMA QINGDAO CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products